Augmented and Diminished Intervals
An augmented interval is a semitone larger than a major or perfect interval.
Augmented Unison
Augmented Second
Augmented Third
Augmented Fourth
because this interval consists of three whole steps, it is also called a tritone
Augmented Fifth
Augmented Sixth
Augmented Seventh
Augmented Octave
A diminished interval is a semitone smaller than a minor or pefect interval. Note that since the interval between two pitches cannot be smaller than zero, there is no such thing as a diminished unison.
Diminished Second
Diminished Third
Diminished Fourth
Diminished Fifth
Diminished Sixth
Diminished Seventh
Diminished Octave
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